AUTOMATIC WATERING: Plant waterers regulate watering and promote healthy roots. This makes gardening easier and plants healthier. PERFECT DESIGN: The plant spike fits most water and soda bottles, such as plastic bottles. - You don't need to hire a babysitter to water your plants during your vacation. Enjoy your vacation. Suitable for outdoor and indoor use: Made of high-quality ceramic material, with good permeability and weather resistance, durable and long service life. Extra long stakes for stable equipment. Simple to use. Durability: On average, the stakes of a 1 liter bottle last 5 to 7 days, while most other stakes only last 2 to 3 days. The secret lies in the ceramics.